WorldQuant Interview Question: You have 9 digits 1-9. Partit... | Glassdoor.co.in
WorldQuant Interviews
Interviews
  • Jobs
  • Companies
  • Salaries
  • Interviews

    Interview Question

    Research Analyst Interview Bengaluru

    You have 9 digits 1-9. Partition them into two sets S1 and

      S2. Make a number (any) using the digits of partition S1. Call this x. Similarly do it for S2. Call it y. the product p=xy. What should the numbers x and y be to maximize p.
    Answer
    Add Tags
    Answer

    Interview Answer

    4 Answers

    ▲
    2
    ▼

    97531 * 8642

    Anonymous on 31-Mar-2011
    ▲
    4
    ▼

    Its actually 87531*9642

    Anonymous on 31-Mar-2011
    ▲
    0
    ▼

    can you please give and explanation, as of how you reach at this conclusion?

    Anonymous on 15-Jul-2012
    ▲
    20
    ▼

    87531*9642

    Start by adding digits to the numbers from left to right. Its easy to see that the numbers should begin with 9 and 8.

    The trick is to add the next biggest digit to the smaller number so that it multiplies the bigger number.

    9 8
    9 87
    96 87
    ...
    9642 8753
    9642 87531

    Aditya Gupta on 16-Aug-2012

    Add Answers or Comments

    To comment on this, Sign In or Sign Up.